Thanks for the mention, Togo.
I can't seem to find any mention of this, or similar products being available to other than approved contractors. From what I hear though, it's quite a costly way of doing things. especially for what I guess is a small area to be treated. I don't think it would be cost effective.
Let's assume that you're looking for a durable decorative finish, rather than just an alternative render. If regular masonry paint is a problem, then why not render in the usual way, and leave it unpainted. The finish colour will never be as bright as paint, but can look much more natural.
Down here in Devon, we have "red" sand. With cement and lime, this finishes in a natural light brown colour. There are plenty of different coloured sands around the country. We also have a local "yellow" sand that gives a creamy colour mixed with lime.
Loads of colour additives are available to mix with regular render mix. Again, the finish is duller than synthetic paint, but much more natural. Looks even better as it ages as well.
A good render on a stable substrate can take any of the usual brands of masonry paint. You shouldn't have to contend with any flaking.
Is the wall brick, stone, or concrete blockwork?